Affiliation:
1. College of Materials Science and Art Design, Inner Mongolia Agricultural University, Hohhot 010018, China
2. Inner Mongolia Key Laboratory of Sandy Shrubs Fibrosis and Energy Development and Utilization, Hohhot 010018, China
Abstract
Wood is a naturally porous material prone to microbial erosion and degradation in outdoor environments. Therefore, the development of an environmentally friendly wood preservative with excellent antibacterial effects and low toxicity is urgently needed. In this study, nitrogen-doped carbon quantum dots (N-CQDs) with excellent antifungal performance and fluorescent properties were synthesized using a one-step hydrothermal method with chitosan quaternary ammonium salt (HACC) as the raw material. The fluorescence characteristics of N-CQD preservatives can help track their position and distribution in wood. The minimum inhibitory concentration (MIC) of N-CQDs is 1.8 mg/mL, which was nearly 22 times lower than that of HACC (40.0 mg/mL) in the PDA medium. The decay resistance test demonstrated that wood treated with N-CQDs showed a considerably reduced decay degree and its mass loss rate decreased from 46 ± 0.5% to 3.8 ± 0.5%. Biological transmission electron microscopy revealed that N-CQDs effectively destroyed fungal cell structures, thereby hindering the growth of Coriolus versicolor. N-CQDs synthesized using the one-step hydrothermal method can be used as an efficient wood preservative that can effectively improve the utilization and service life of wood.
Funder
Graduate Student Scientific Research Innovation Projects in the Inner Mongolia Autonomous Region of China
Central Guidance for Local Science and Technology Development Projects
Key R&D and Achievement Transformation Projects in the Inner Mongolia Autonomous Region of China
Major Special Project of the Inner Mongolia Autonomous Region of China
Grassland Talent Innovation Team of the Inner Mongolia Autonomous Region of China
Cited by
1 articles.
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